Controlled-release compound fertilizer

A compound fertilizer and nitrogen fertilizer technology, applied in fertilizer mixtures, fertilization devices, agricultural gas emission reduction, etc., can solve the problems of soil and natural environment pollution, unreasonable adjustment of fertilizer components, and unsatisfactory slow-release effect, etc. Reasonable, slow down nitrification and denitrification reaction rate, release rate is easy to control effect

Inactive Publication Date: 2012-07-04
王海炜
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  • Abstract
  • Description
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Problems solved by technology

[0003] The slow-release fertilizers in the prior art rely on single-layer or multi-layer coatings, or simply add inhibitors to control the release rate of chemical fertilizer nutrients, and the slow-release effect is not ideal; there are incomplete nutrients and fertilizer components. The adjustment is unreasonable, and the manufacturing process is complicated and the cost is high; there are many problems such as pollution to the soil and the natural environment

Method used

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Embodiment Construction

[0018] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0019] A controlled-release compound fertilizer, the weight ratio of each component is: phosphogypsum, fly ash slow-release composition 10-30, slow-release nitrogen fertilizer containing urease inhibitor and digestive bacteria inhibitor 20-40, mixed potassium fertilizer 15- 30. Trace element compounds 2-4. The phosphogypsum is solid waste discharged from a wet-process phosphoric acid plant with a water content of less than 8%. The fly ash is collected from the flue gas of a coal-fired boiler after dedusting 1. One or any combination of two or more of waste slag and furnace bottom ash discharged after flue gas is desulfurized...

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Abstract

The invention relates to a controlled-release compound fertilizer, which consists of the following components in parts by weight: 10-30 parts of a phosphogypsum-fly ash slow-release compound, 20-40 parts of a slow-release nitrogen fertilizer containing a urease inhibitor and a digesting bacteria inhibitor, 15-30 parts of a mixed potassium fertilizer and 2-4 parts of a trace element compound. In the invention, the phosphogypsum-fly ash slow-release compound is adopted, so that slow release of fertilizer nutrients is realized, the utilization ratio of the fertilizer is increased, pollution is eliminated, the environment is protected, resources are saved, and production cost is lowered; and the stable digesting bacteria inhibitor is used, so that the nitration and denitrification reaction rates are effectively lowered, leaching loss of the nitrogen fertilizer and release of the nitrogen fertilizer in the form of NO and NO2 gas are reduced, and the utilization ratio of the fertilizer is increased.

Description

technical field [0001] The invention relates to a controlled release compound fertilizer. Background technique [0002] Chemical fertilizers provide the necessary nutrients for the growth of crops, play a vital role in the yield and quality of agricultural products, occupy a large share in the investment in the agricultural industry, and tend to have adverse effects on the soil environment and the natural environment. Therefore, the combination of nutrients is scientific and reasonable to match the growth needs of plants; the nutrients are released slowly to adapt to the absorption rate of nutrients by plants; the rate of fertilizer degradation and nitrification is slowed down to reduce fertilizer leaching and NO, N0 2 , NH 3 The gas form enters the atmosphere, thereby improving the utilization rate of fertilizers; chemical fertilizers and their manufacturing methods that are beneficial to the protection of soil resources and the natural environment are expected by people. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
CPCY02P60/21
Inventor 王海炜
Owner 王海炜
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